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排尿功能紊乱常见于神经源性膀胱、膀胱出口梗阻和老年性尿失禁〔１〕。对逼尿肌结构及功能的了解，有利于对排尿功能紊乱发病机制和临床过程的理解。现就逼尿肌的结构、功能、两者的关系以及逼尿肌功能紊乱的超微结构变化等问题作一综述。１ 正常逼尿肌结构逼尿肌由平滑肌（
Urinary dysfunction is common in neurogenic bladder, bladder outlet obstruction and senile urinary incontinence 〔1〕. The detrusor structure and function of understanding, is conducive to the pathogenesis of urinary dysfunction and clinical understanding. Now detrusor structure, function, the relationship between the two detrusor dysfunction and ultrastructure changes and other issues are reviewed. 1 normal detrusor structure of detrusor muscle (smooth muscle